21002420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22343}}^1$

素因数の和:22399

約数の個数: 24

約数和(自身を含む): 45045504

約数和(自身を除く): 24043084

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22343, 44686, 89372, 111715, 223430, 446860, 1050121, 2100242, 4200484, 5250605, 10501210, 21002420]

約数ペア:

[(1, 21002420), (2, 10501210), (4, 5250605), (5, 4200484), (10, 2100242), (20, 1050121), (47, 446860), (94, 223430), (188, 111715), (235, 89372), (470, 44686), (940, 22343)]